:root {
  --bg: #0e1220;
  --bg2: #141a2e;
  --card: #1b2340;
  --line: #2a3356;
  --text: #eef2ff;
  --muted: #8a94c0;
  --accent: #ffd166;
  --accent2: #4ecdc4;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background-color: var(--bg);
  background-image: radial-gradient(1200px 600px at 50% -10%, #1c2550 0%, transparent 60%);
  color: var(--text);
  -webkit-user-select: none;
  user-select: none;
  overflow: hidden;
}

#app {
  height: 100vh;
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* HUD */
.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
}
.stage-badge {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--muted);
}
.stage-badge span:first-child { color: var(--accent); }
.reinc {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.reinc #reincCount { color: var(--accent); font-weight: 800; }
.energy {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.energy #energy { color: var(--accent2); font-size: 20px; }
.label { color: var(--muted); font-size: 12px; font-weight: 500; }

/* Stage */
.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
}
.stage-name {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.being {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  min-height: 18px;
  letter-spacing: 0.3px;
}
.card strong { color: var(--accent); }
.hint {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.age-btn {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: radial-gradient(circle at 30% 30%, #2a3566, var(--card));
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 14px 40px rgba(0,0,0,.45), inset 0 2px 6px rgba(255,255,255,.08);
  transition: transform .08s ease, box-shadow .2s ease;
}
.age-btn:hover { border-color: var(--accent); }
.age-btn:active { transform: scale(.94); }
.age-btn .emoji {
  font-size: 96px;
  filter: drop-shadow(0 6px 12px rgba(0,0,0,.4));
}

/* Panel */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}
.panel h2 {
  margin: 0 0 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}
.upgrade {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 12px;
  align-items: center;
  background: var(--bg2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s ease;
}
.upgrade:last-child { margin-bottom: 0; }
.upgrade:hover { border-color: var(--accent2); }
.upgrade .up-title { font-weight: 700; font-size: 15px; }
.upgrade .up-desc { color: var(--muted); font-size: 12px; grid-column: 1; }
.upgrade .up-cost {
  grid-row: 1 / span 2;
  color: var(--accent);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.upgrade.broke { opacity: .5; cursor: not-allowed; }
.upgrade.broke .up-cost { color: var(--muted); }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translate(-50%, 20px);
  background: rgba(20,26,46,.95);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 5;
  font-size: 15px;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,12,20,.75);
  display: grid;
  place-items: center;
  z-index: 10;
  padding: 20px;
}
.overlay.hidden { display: none; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px;
  text-align: center;
  max-width: 340px;
  animation: pop .3s ease;
}
.card .big { font-size: 72px; }
.card h1 { margin: 10px 0 6px; font-size: 26px; }
.card p { color: var(--muted); line-height: 1.5; margin: 0 0 20px; }
.card .btn {
  background: var(--accent);
  color: #1a1500;
  border: none;
  border-radius: 12px;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}
.card .btn:hover { filter: brightness(1.08); }

@keyframes pop {
  from { transform: scale(.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Float damage numbers */
.float {
  position: fixed;
  pointer-events: none;
  color: var(--accent2);
  font-weight: 800;
  font-size: 20px;
  z-index: 6;
  animation: floatUp 0.8s ease forwards;
}
@keyframes floatUp {
  from { transform: translateY(0); opacity: 1; }
  to { transform: translateY(-60px); opacity: 0; }
}